Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회지)

Korean Society of Surveying, Geodesy, Photogrammetry and Cartography (한국측량학회)
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GCP Chip Automatic Extraction of Satellite Imagery Using Interest Point in North Korea

특징점 추출기법을 이용한 접근불능지역의 위성영상 GCP 칩 자동추출

  • Received : 2019.07.12
  • Accepted : 2019.08.27
  • Published : 2019.08.31
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Abstract

The Ministry of Land, Infrastructure and Transport is planning to launch CAS-500 (Compact Advanced Satellite 500) 1 and 2 in 2019 and 2020. Satellite image information collected through CAS-500 can be used in various fields such as global environmental monitoring, topographic map production, analysis for disaster prevention. In order to utilize in various fields like this, it is important to get the location accuracy of the satellite image. In order to establish the precise geometry of the satellite image, it is necessary to establish a precise sensor model using the GCP (Ground Control Point). In order to utilize various fields, step - by - step automation for orthoimage construction is required. To do this, a database of satellite image GCP chip should be structured systematically. Therefore, in this study, we will analyze various techniques for automatic GCP extraction for precise geometry of satellite images.

국토교통부에서는 2019년과 2020년에 차세대 중형위성 1호 및 2호 기를 발사하여, 지구환경 모니터링 및 접근불능지역에 대한 수치지도 제작에 활용하고자 하고 있다. 차세대 중형 위성을 통해 수집된 위성영상정보는 지구환경 모니터링, 지형도 제작, 재난재해 예방을 위한 분석 등 다양한 분야에 활용이 가능하다. 이와 같이 다양한 분야에 활용하기 위해서는 위성영상의 위치정확도 확보가 중요하며, 위성영상의 정밀기하수립을 위해 지표상의 정확한 지상기준점(GCP: Ground Control Point)을 사용하여 정밀 센서 모델을 수립하는 과정이 필요하다. 또한, 다양한 분야의 활용을 위해 정사영상 구축을 위한 단계별 자동화가 필요하며, 이를 위해 위성영상 GCP 칩의 DB (Data Base)가 체계적으로 구축되어야 한다. 따라서 본 연구에서는 위성영상의 정밀기하수립을 위하여 GCP를 자동 추출하는 다양한 기법들을 분석하여 최적의 방법을 도출하고자 한다.

Keywords

References

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